Cellular mobile telephone apparatus and an alarm device therefor

ABSTRACT

A cellular mobile telephone apparatus including a main body, and an alarm device which is provided separately from the main body, the main body including: 
     receiving/transmitting unit for receiving and transmitting radio frequency signals between a base station; modulating/demodulating unit for modulating and demodulating between the radio frequency signals, and a conversation signal and a control signal; telephone receiver unit for reproducing audible conversation voice in response to the demodulated conversation signal from the modulating/demodulating unit; telephone transmitting unit for converting conversation voice into the conversation signal; a controller for controlling operation of the main body of the cellular mobile telephone apparatus in accordance with the control signal; 
     and an alarm device for providing an alarm signal which includes an identification information and is transmitted through the radio frequency, when a call is terminated at the main body; and 
     the alarm device including: receiving unit for receiving the alarm signal of radio frequency; a discriminatory for discriminating the alarm signal assigned to itself from others by the identification information included therein; and an alarm unit for alarming call termination in response to the identification by the discriminator.

This is a continuation/divisional of parent application Ser. No.08/872,138, allowed.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a mobile radio communication apparatusincluding a portable telephone apparatus or a code-less telephoneapparatus, more particularly to a cellular mobile telephone apparatusand an alarm device therefor, by which so called a call termination isalerted separately from a main body thereof.

2. Description of Related Art

Recently, there is available a cellular mobile telephone apparatus whichalarms the call termination (i.e., receipt of a call at the telephoneapparatus terminal) to a user thereof, not by a sound but throughvibration thereof, so as not to disturb people around him/her by issuingthe alarming sound. With such cellular mobile telephone apparatus, itmust be closely touched with a body of the user so that he/she can sensethe vibration. However, according to the present technical level, it isdifficult to miniaturize and lighten the telephone apparatus so that itcan be used comfortably even in condition that it is closely touchedwith the body.

For that reason, a small-sized device for alarming the call terminationhas been conceived, which is separately provided from the main body ofthe cellular mobile telephone apparatus. With this small-sized device,even if the main body of the cellular mobile telephone apparatus is putinto a bag or the like, the user of the cellular mobile telephoneapparatus can notice the call to his/her own telephone apparatus withoutdisturbing the people around by the alarm sound, since it notifies thecall termination thereto through it's vibration, as far as it is usedclosely touched with the body of the user.

Such alarming device operates if it detects a transmitted signal, whichsignal is transmitted from the main body of the mobile telephoneapparatus when it receives a call signal from the base station and sendsback a termination signal for it, in a field of a mobile telephonesystem or a so-called personal phone system. Also, in Japanese PatentLaying-Open No. 6-21875 (1994), there is disclosed a cellular mobiletelephone apparatus having an auxiliary device or unit for alarming thecall termination through vibration, which is provided separately fromthe main body and connected through a cable or a radio frequency signaltherebetween.

However, in the prior art mentioned above, since there is notnecessarily established a relationship between the cellular mobiletelephone apparatus and the alarm device or auxiliary unit in aone-to-one correspondence, there is a drawback that the alarm deviceconfuses and erroneously starts vibration responding to the transmittedsignal of noticing the call termination from the mobile telephoneapparatus of others, in particular when it is located or used in thevicinity thereof.

Further, information which can be obtained from the alarm device by thevibration is limited call termination of his/her own cellular mobiletelephone apparatus. Therefore, there are other drawbacks that the mainbody of the cellular mobile telephone apparatus generates an alarm soundwhen the battery thereof comes near to be exhausted for notifying it tothe user, thereby disturbing the other people around, and that when theuser who is carrying the alarm device with him/her is away from his/herown cellular mobile telephone apparatus, he/she fails to hear the arisenalarm sound, nor to notice that it is in the condition that it cannotrespond to a call any more because of the exhaustion of the battery.

SUMMARY OF THE INVENTION

According to the present invention., by noting such drawbacks mentionedabove, it is an object to provide a cellular mobile telephone apparatusand an alarm device therefor, with which the user thereof can alwaysnotice the call termination at his/her own cellular mobile telephoneapparatus.

Another object of the present invention is to provide a cellular mobiletelephone apparatus and an alarm device therefor, with which the userthereof can also notice the other conditions of his/her own cellularmobile telephone apparatus.

For achieving the above object, according to the present invention,there is provided a cellular mobile telephone apparatus comprising amain body, and an alarm device which is provided separately from saidmain body, said main body including:

receiving/transmitting means for receiving and transmitting radiofrequency signals between abase station;

modulating/demodulating means for modulating and demodulating betweenthe radio frequency signals and conversation signal;

telephone receiver means for reproducing audible conversation voice inresponse to the demodulated conversation signal from saidmodulating/demodulating means;

telephone transmitting means for converting conversation voice into theconversation signal;

means for controlling operation of said main body of said cellularmobile telephone apparatus; and

means for providing an alarm signal which includes an identificationinformation and is transmitted through the radio frequency, when a callis terminated at said main body; and said alarm device including:

receiving means for receiving the alarm signal of radio frequency;

means for discriminating the alarm signal assigned to itself from othersby the identification information included therein; and

alarm means for alarming call termination in response to result of theidentification by said identifying means.

Further, for achieving the above object, according to the presentinvention, there is also provided a cellular mobile telephone apparatuscomprising:

receiving/transmitting means for receiving and transmitting radiofrequency signals between a base station;

modulating/demodulating means for modulating and demodulating betweenthe radio frequency signals and conversation signal;

telephone receiver means for reproducing audible conversation voice inresponse to the demodulated conversation signal from saidmodulating/demodulating means;

telephone transmitting means for converting conversation voice into theconversation signal;

means for controlling operation of said cellular mobile telephoneapparatus; and

means for providing an alarm signal which includes an identificationinformation and is transmitted through the radio frequency.

Moreover, for achieving the above object, according to the presentinvention, there is provided an alarm device for a cellular mobiletelephone apparatus, being provided separately from said cellular mobiletelephone apparatus, comprising:

receiving means for receiving an alarm signal of radio frequency;

means for discriminating the alarm signal assigned to itself from othersby an identification information included therein; and

alarm means for alarming call termination in response to result of theidentification by said identifying means.

BRIEF DESCRIPTION OF THE DRAWING(S)

FIG. 1 shows constructions of a cellular mobile telephone apparatus andan alarm device as an embodiment according to the present invention;

FIG. 2 shows external view of the cellular mobile telephone apparatusand the alarm device as the embodiment according to the presentinvention;

FIG. 3 shows formats of transmitted information as the embodimentaccording to the present invention;

FIG. 4 shows an operation flowchart of the alarm device as theembodiment according to the present invention;

FIG. 5 shows an operation timing of an alarm transmitting circuit and analarm receiving circuit as the embodiment according to the presentinvention;

FIG. 6 shows an operation flowchart of the alarm device as anotherembodiment according to the present invention; and

FIG. 7 shows constructions of the cellular mobile telephone apparatusand the alarm device as another embodiment according to the presentinvention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, an embodiment of the present invention will be explained byreferring to the attached drawings.

In FIG. 1, there is shown an example internal-; and construction of acellular mobile telephone apparatus and an alarm device therefor, as anembodiment in accordance with the present invention, and in FIG. 2, anexternal view of the cellular mobile telephone apparatus and the alarmdevice, as an embodiment in accordance with the present invention.

As shown in FIG. 1, a mobile telephone apparatus is constructed with amain body 1 as the cellular mobile telephone apparatus and the alarmdevice 2 which is being separated from the main body 1.

First, in the main body of the cellular mobile telephone apparatus 1, aradio communication signal which is transmitted from a base station (notshown in the drawings) is received via an antenna 3 and inputted into aradio signal receiving/transmitting circuit 4, and is converted into anintermediate-frequency signal therein. The receivedintermediate-frequency signal is demodulated by a digitalmodulating/demodulating circuit 5 into a digital signal, and thereceived signal which is demodulated into the digital signal is decodedby an error correction coding/decoding circuit 6. Here, the signaloutputted by decoding by the error correction coding/decoding circuit 6includes a digital conversation signal and a digital control signal.Between those two signals, the digital control signal which relates to aprotocol is supplied to a control circuit 10 which controls channelassignment, etc. The digital conversation signal, after being treatedwith a decoding process by an audio coding/decoding circuit 7 and isdecoded back into an analogue conversation signal, is outputted from areceiver 8.

On the contrary after conversation voice is being exchanged into atransmission signal by a transmitter 9, it is encoded to a digitaltransmission signal by the audio encoding/decoding circuit 7. Thedigital transmission signal, as well as the digital control signal,after being encoded by the error correction encoding/decoding circuit 6,is inputted into a digital modulation/demodulation circuit 5 to bemodulated into quadrature modulation signal. The modulated signal isexchanged into a high frequency signal of a predetermined radiofrequency by the radio transmitting/receiving circuit 4 and istransmitted through the antenna 3 to the base station.

By the way, the above-mentioned control circuit 10 includes amicro-computer as a main control part, and it includes a termination(i.e., incoming call) alarm control means therein, in addition to afunction of controlling all parts thereof. The termination alarm controlmeans generates a termination alarm signal when the received digitalsignal is the termination signal addressed to that telephone itself.Normally, the termination alarm signal initiates the operation of asounder 11 to generate an alerting sound. A battery 18 is used as anelectrical power source of the cellular mobile telephone apparatus 1 andsupplies the electrical power to every part thereof through a powerswitch 19.

Next, the operation of the cellular mobile telephone apparatus 1 and theconstruction of the alarm device 2, in accordance with the presentinvention, will be explained by referring to FIGS. 1 through 5 andtables 1 and 2.

Under waiting condition, the cellular mobile telephone apparatus 1 iswatching whether the termination signal addressed to that apparatusitself is arrived from the base station or not. Under this condition,when arriving the termination signal received is addressed to itself,the control circuit 10 acknowledges it and generates the terminationalarm signal. Upon the termination alarm signal, a vibrator 15 which isprovided in the cellular mobile telephone apparatus 1 is driven, andalternatively, the sounder 11 issues an alarm of it.

At the same time, by operating an alarm transmitting circuit 16, thetransmission information is transmitted by a radio frequency signal froman alarm transmitting antenna 17 which is provided in the cellularmobile telephone apparatus 1 to the alarm device 2. Namely whentransmitting by the radio frequency signal, the control circuit 10 formsa format for information transmission as shown in FIG. 3, and sends itat a transfer speed of 512 bps to the alarm transmitting circuit 16, bywhich it is modulated into FM signal and is transmitted from the antenna17 for transmitting the termination alarm.

The alarm device 2 has an antenna 21 for receiving the radio frequencysignal transmitted from the cellular mobile telephone apparatus 1 and afunction of detecting a field intensity of the received radio frequencysignal for checking the existence of the received radio frequencysignal, and in addition thereto, it is constructed with an alarmreceiving circuit 22 for demodulating the received radio frequencysignal, an alarm control circuit 23, and an alarm memory circuit 24.Here, the termination alarm control circuit 23, including a microcomputer therein, drives a vibrator 25 and a two (2) color LED displaydevice 26 upon deciding the information which is transmitted from thecellular mobile telephone apparatus 1, and monitors the condition of apush button switch 27. The alarm memory circuit 24, being connected tothe alarm control circuit 23, memorizes an identification (ID) numberfor identifying respective alarm device 2 thereof, and an information ofwhether the cellular mobile telephone apparatus 1 is located within anarea where the cellular mobile telephone service is available or not. Asan electric power source of the alarm device 2, a battery 28 is used andit supplies the electric power to each part thereof through a powerswitch 29.

FIG. 3 shows a format of the information transmitted from the cellularmobile telephone apparatus 1 to the alarm device 2, in accordance withthe present invention. The transmitted information is formed by 754 bitsin total, and is separately constructed by a preamble 31, asynchronizing information 32, a separation information 33, anidentification (ID) information 34, and a control information 35.

The transmission of the information from the cellular mobile telephoneapparatus 1 is performed by every eight (8) bits as a transmission unitof bits, and the two (2) bits within the transmission unit as an unit ofinformation transmission, and the two (2) bits at the top thereof areassigned to start bits of “1” and “0”, respectively. Those two (2) bitsare used so as to make synchronization in the modulation by every eight(8) bits. Therefore, the effective bits are six (6)bits in thetransmitted information of eight (8) bits.

(1) The preamble 31 is formed by 600 bits of repetitive pattern,repeating between “1” and “0” in every two (2) bits, because it is notprovided for the purpose of information transmission but only fordetecting the received radio frequency signal.

However, since the alarm device 2 performs an intermittent receivingoperation in order to suppress exhaustion of the battery 28 thereof,continuous transmission of the signal for a certain period of time isneeded at the transmission side for the received signal to be detectedat the intermittent operation timing.

(2) Each synchronization information 32 is made by information of 8bits, and the same synchronization information continuously repeats for4 times. This is a pre-set code in common for the alarm devices 2, forthe purpose of obtaining a synchronization by the unit of 8 bits forinformation transmission following the preamble 31.

(3) The separation information is also made by information of 8 bits.This is also a code which is preset in common among the alarm devices 2,for the purpose of acknowledging information of the identification (ID)information 34 following the synchronization information 32.

(4) The identification information 34 is made of information of 16 bits,and the same identification information 34 is continuously repeated 4times. This is a code, which is preset to each of the alarm devices 2,for the purpose of respectively identifying the alarm devices, and theeffective information elements of it are 12 bits. In the cellular mobiletelephone apparatus 1, a part of the memorizing circuit 12 is used as ameans for maintaining the identification information 34. Thisidentification information memorized in the memorizing circuit 12 can bechanged in the contents thereof, for example, by inputting therespective identification number of the alarm device 2 to be usedthrough key input device 13. The inputted identification number isexchanged into an identification information 34 of digital code throughthe control circuit 10 and is memorized in the memorizing circuit 12.Furthermore, the inputted identification number can be checked bydisplaying it on the LCD display device 14. With this construction, theuser can easily change the contents of the identification information 34when he/she wishes to use another alarm device 2, for example on aground of loosing his/her alarm device 2.

As the identification information, moreover, there can be used a callcode which the cellular mobile telephone apparatus 1 owns respectively,and a specific number or a part thereof, including a serial productionnumber of the cellular mobile telephone apparatus 1, or that of thealarm device 2.

(5) The control information 35 is made of 8 bits, and the same controlinformation 35 repeats 5 times. This is a code which is determined incommon among the alarm devices 2 for controlling thereof and has 6 bitsas effective information elements.

As shown in a TABLE 1, the alarm device 2 has three (3) independentelements of operation, including operation of the vibrator 25,controlling of the two color LED display device 26, and displaying ofinformation of whether the cellular mobile telephone apparatus 1 islocating within the service area or not. Therefore, as the informationfor operating those, the control information 35 has fourteen (14) kindsof coded information, including eight (8) kinds of vibration patterns(more concrete patterns are shown in the TABLE 2) of the vibrator 25,four (4) kinds of display patterns, and two (2) kinds of information ofwhether the cellular mobile telephone apparatus 1 is locating within theservice area or not. Those are direct functions of the alarm device 2,but it is necessary to previously inform the user what kinds ofconditions of the cellular mobile telephone apparatus 1 are indicated bythose functions, through a user's manual or actually operating the alarmdevice 2.

TABLE 1 Operation DT DT DT DT DT DT Element 6 5 4 3 2 1 FunctionVibrator X X X 0 0 0 stop vibrator X X X 0 0 1 drive vibrator invibration pattern 1 X X X 0 1 0 drive vibrator in vibration pattern 2 XX X 0 1 1 drive vibrator in vibration pattern 3 X X X 1 0 0 drivevibrator in vibration pattern 4 X X X 1 0 1 drive vibrator in vibrationpattern 5 X X X 1 1 0 spare 1 X X X 1 1 1 spare 2 Area Inf. X X 0 X X Xinside of service area X X 1 X X X outside of service area LED 0 0 X X XX distinguish LED 0 1 X X X X turns red LED on and off 1 0 X X X X turnsgreen LED on and off 1 1 X X X X turns red and green LEDs on and offsimultaneously

TABLE 2 Number of vibration patter Operation of Vibrator 1 repeating ON(0.5 sec)/OFF (0.5 sec) for a time period of 15 sec 2 repeating ON (1.sec)/OFF (2.0 sec) for a time period of 15 sec 3 repeating ON (0.5sec)/OFF (3.0 sec) for a time period of 15 sec 4 ON for a time period of3.0 sec 5 ON for a time period of 15 sec

Namely, the cellular mobile telephone apparatus 1 assigns those threeconditions, i.e., the termination at the cellular mobile telephoneapparatus 1, the exhaustion of the battery 18 of the cellular mobiletelephone apparatus 1, and the information of whether the cellularmobile telephone apparatus 1 is located within the service area or not,to the respective operations of the alarm device 2, previously. Forexample, in case of termination to the cellular mobile telephoneapparatus 1, the vibrator 25 is operated with a vibration pattern 1, anda red color LED of the two color LED display device 26 turns on and off.When the battery 18 of the cellular mobile telephone apparatus 1 isexhausted, the vibrator 25 operates with a vibration pattern 2, and thered color LED and the green color LED of the two color LED displaydevice 26 turn on and off at the same time. When the cellular mobiletelephone apparatus 1 is located in the area where the cellular mobiletelephone service is available, information indicating such is memorizedinto the alarm memorizing circuit 24 of the alarm device 2.

Next, the operation of the alarm device 2 of an embodiment in accordancewith the present invention will be explained by referring an operationflow chart thereof shown in FIG. 4.

The alarm device 2 has three (3) modes, including a stand-by mode, areceiving operation mode, and an indication mode of whether the cellularmobile telephone apparatus 1 is located within the service area. Afterthe power switch 29 is turned on, the alarm device 2 conducts aninitializing processing, and moves into the stand-by mode.

The stand-by mode is a mode for determining the operation timing of thealarm device 2. The alarm device 2 performs the intermittent receivingoperation at an interval of 750 ms for decreasing the exhaustion of thebattery 28 thereof as much as possible. The alarm control circuit 23 ofthe alarm device 2 sets a timer function of 700 ms and stops the otherfunctions. When the timer counts up to the preset time, the alarm device2 shifts into the receiving operation mode.

In the receiving operation mode, the alarm device 2 operates inaccordance with the contents of the transmitted information from thecellular mobile telephone apparatus 1. The alarm control circuit 23analyzes the transmitted information, makes the vibrator 25 and the twocolor LED display device 26, and memorizes into the alarm memorizingcircuit 24 the information of whether the cellular mobile telephoneapparatus 1 is located within the service area or not.

(1) In detecting the preamble, receiving operation is conducted for 50ms and the preamble is acknowledged when continuously detectingrepetitive pattern between “1” and “0” for 12 bits. In case that it isimpossible to detect the continuous repetitive pattern between “1” and“0” for 12 bits within 50 ms, it moves back into the stand-by mode. Inthe detecting, since the unit for information transmission is of 8 bitsand the 2 bits thereof are assigned to the start bits, i.e., two (2)bits of “1” and “0”, the received radio frequency signal is demodulatedin synchronization with each 8 bits so as to take out the informationthereof.

Here, the operation of the alarm transmitting circuit and the alarmreceiving circuit of an embodiment in accordance with the presentinvention will be explained in more detail by referring the operatingtiming shown in FIG. 5.

In FIG. 5, the horizontal axis indicates time and the vertical axis themode of the operation. In case of no received radio frequency signal(the alarm transmitting circuit 16 is in the stand-by mode), since it isimpossible to detect the preamble 31, the alarm device 2 performs theintermittent receiving operation, repeating between the receivingoperation for 50 ms and the stand-by operation for 700 ms.

In case that the alarm transmitting circuit 16 is in receiving operationand the preamble 31 is transmitted in the same time period, the preamble31 is detected if the alarm receiving circuit 22 of the alarm device 2is in the receiving operation, and the information can be receivedcontinuously thereafter. Therefore, the time period when the preamble 31is detected must be set to be longer than the period (750ms) of theintermittent receiving operation. Here, as mentioned previously, sincethe preamble is formed of 600 bits and the transfer speed is set at 512bps, the time period during which the preamble 31 is transmitted is morethan .1 second, therefore, there is no possibility that it goes beyondthe period of the intermittent receiving operation. Further, if it ispossible to detect the preamble 31, the alarm device 2 extends the timeof the receiving operation continuously until it completes the receivingof the information, for receiving the information thereafter.

(2) In detection of the synchronization information, the detection ofthe synchronization information is acknowledged when one (1) of the four(4) synchronization information 32 continuously transmitted is detected.No synchronizing information 32 can be detected, then it moves back intothe stand-by mode.

(3) In detection of the separation information, the detection of theseparation information is acknowledged when any four (4) bits or morethan that of the eight (8) bits within the separation information 33coincide with a preset separation information 33. Otherwise, it movesback into the stand-by mode. 42

(4) In detection of the identification information, the detection of theidentification information is acknowledged when any one of the four (4)identification information 34 which are continuously transmittedcoincides with the identification information 34 memorized in the alarmmemorizing circuit 24. If no identification information 34, norcoincidence with the identification information 34 memorized in thealarm memorizing circuit 24 can be detected, it moves back into thestand-by mode.

(5) In detection of the control information, the detection of thecontrol information is acknowledged when the coincidence among any three(3) or more than that of the control information 35 can be detectedwithin the five (5) control information 35 which are continuouslytransmitted. Otherwise, it moves back into the stand-by mode.

(6) In processing of the control information, in accordance with thecontrol information 35, the vibrator 25 of the alarm device 2 isoperated, the LEDs of the two color LED display device 26 are turned onand off, and the information of whether it is located within the servicearea or not is memorized in the alarm memorizing circuit 24, as shown inTABLE 1. Upon the completion of the processing of the controlinformation, it moves back into the stand-by mode.

As mentioned in the above, since the cellular mobile telephone apparatus1 assigns the three conditions thereof to the alarm device 2,respectively, i.e., alarming the termination at the cellular mobiletelephone apparatus 1, alarming the exhaustion of the battery 18 of thecellular mobile telephone apparatus 1, and the information of whetherthe cellular mobile telephone apparatus 1 is located within the servicearea or not, the user can notice the call termination at his/hercellular mobile telephone apparatus 1 and the exhaustion of the battery18 thereof, by the specific operation patterns of the alarm device 2.

Further, in the indication mode of location within the service area,when the push button switch 27 is pushed during when the alarm device 2is in the stand-by mode, it checks the information memorized in thealarm memorizing circuit 24 and displays on the two color LED displaydevice 26 whether the cellular mobile telephone apparatus 1 is locatedwithin the area where the cellular mobile telephone service is availableor not. When the user notices this and stops pushing down the pushbutton switch 27, it turns back into the stand-by mode.

Further, another embodiment will be explained by referring to FIG. 6showing an operation flow chart of the alarm device 2 of anotherembodiment, in accordance with the present invention. This anotherembodiment differs from the embodiment mentioned above in the detectionportion of the preamble. Namely, the preamble detection mentioned abovecan be substituted with a detection of received radio frequency signal,as shown FIG. 6. In this received radio frequency signal detection, thereceiving operation of 50 ms is performed by the function of measuringthe field intensity of the received radio frequency signal of the alarmreceiving circuit 22, and the alarm control circuit 23 decides it. Whenthe received radio frequency signal can be detected, it moves back intoa operation of detecting the synchronization information, otherwise whenno radio frequency signal can be detected, it moves into the stand-bymode.

In this case, since the preamble is not necessary, the modulation of thepreamble 31 is not necessary at the transmitter side. However, thetransmission at the carrier frequency is necessary, since detection ofthe received radio frequency signal is necessary for establishing atiming between the transmitting end and the receiving end of the radiofrequency signal.

Moreover, in accordance with another embodiment, by substituting anotherkind of two color LED display device which can display letters and imagefor the LED display device 26, and further by increasing the amount ofinformation of the control information 35, display of a message servicewhich has been put in practical use in recent years in the pager and/orthe cellular mobile telephone can be achieved. And, it is also possibleto display a message information including a call origination number, bysending it from the cellular mobile telephone apparatus 1 to the alarmdevice 2.

Moreover, in the embodiment mentioned above, the identificationinformation 34 is previously assigned to the respective alarm devices 2.However, by using communication function between the cellular mobiletelephone apparatus 1 and the alarm device 2, it is also possible tochange the identification information 34 memorized in the alarmmemorizing circuit 24 through the key input device 13 of the cellularmobile telephone apparatus 1. More concrete method of it is omittedsince it is apparent from the explanation given heretofore. In doing so,the user can freely select and set the identification information 34.And, when using a plurality of the alarm devices 2 and assigning thesame identification information to them, for instance, the user can makethe plural alarm devices 2 operate at the same time, but does not needto manage the identification information of them respectively.

Furthermore, another embodiment will be explained by referring to FIG. 7showing construction of the cellular mobile telephone device and thealarm device of another embodiment, in accordance with the presentinvention. In the embodiment mentioned above, using the transmitterprovided in the cellular mobile telephone device 1 and the receiver inthe alarm device 2, the communication can be obtained only in onedirection. However, as shown in FIG. 7, it is possible to construct suchthat each of the cellular mobile telephone device 1 and the alarm device2 has the alarm transmitting circuit 41 and the alarm receiving antenna42, respectively. With such construction, bi-directional communicationcan be obtained between the cellular mobile telephone device 1 and thealarm device 2. Further, with provision of a small-sized input device 43onto the alarm device 2, it is possible for the user, by using the alarmdevice 2, to make remote control of the cellular mobile telephoneapparatus 1 without taking out thereof.

For example, even though the cellular mobile telephone apparatus 1receives the call termination thereto and notifies it to the user byoperating the alarm device 2, the user necessarily cannot to respond thetermination simultaneously, for instance when he/she is on the train orattending a meeting, or on another reason that the cellular mobiletelephone apparatus 1 is inside of his/her bag. In such the case,however, the user, by inputting an instruction to control the cellularmobile telephone apparatus 1 through the input device 43 of the alarmdevice 2, can send back a message that he/she cannot take the telephoneapparatus right now, or can record the message from the sender bychanging the cellular mobile telephone apparatus 1 into recording modefor his/her absence. Alternatively, he/she can see the message of thesender on the display device 44.

In the embodiment mentioned above, as the telephone apparatus isexplained of the cellular mobile telephone system using the mobile basestation, however, the present invention should not be limited only tosuch the type, but can cover other types which can achieve the object ofthe present invention mentioned above. Further, the external view, theconstruction, the circuitry and means of the apparatus and the devicesmentioned in the above also should not be limited only to those shown inthe various embodiments, for example, the construction and the contentsof the information format relating transfer of the information (thepreamble 31, the synchronization information 32, the separationinformation 33, the identification information 34 and the controlinformation 35), the transfer speed, the frequency of the carrier radiofrequency signal, the modulation method of the radio frequency signal,the operation timing of the alarm transmitting circuit 16 and the alarmreceiving circuit 22, the operation elements and the operation contentsof the alarm device 2, the operation and function of the push buttonswitch 27, etc. In similar way, the operation flow chart of the alarmdevice 2 shown in the various embodiments also can cover other methodswhich are conceivable for the person skilled in the art for achievingthe object of the present invention.

Furthermore, as the alarming means is explained the vibrator having thevibration generating means, but it should not be limited only to thatvibration generating means. For example, means for generating impulse toa tactual sense by making a small projection going in and out, and othertactual sense impulsion means by way of changing the shape of thecellular mobile telephone apparatus 1 or the alarm device 2 itself canbe adopted.

Moreover, as another alarming means, an electrical impulse generatingmeans can be adopted, in which an electrode is kept touching with skinand gives an electric shock by weak current so as to make the user ableto sense such current.

In similar manner, with the alarming means by the display means shouldnot be limited to the method of turning the display device on and off,and a visual impulsion generating means for noticing the user throughvisual impulsion can be applied.

In those impulsion generating means mentioned above, it is of coursethat the impulsion is suppressed under such level that the used cannotbe injured physically and mentally in order to keep the safety of theuser in the practical use.

Furthermore, the radio frequency signal mentioned in the above shouldnot be limited only to that radio frequency signal but also to coverother medium including an ultrasonic.

As is apparent from the detailed description mentioned above, thecellular mobile telephone apparatus and the alarm device therefor,according to the present invention, always alarm the user thereof theinformation, including the call termination at the cellular mobiletelephone apparatus, the exhaustion of the battery of the mobiletelephone apparatus and information including that the telephoneapparatus is location within the service area, clearly.

What is claimed is:
 1. A cellular mobile telephone system comprising acellular mobile telephone apparatus capable of sending a message througha connectable base station even in a case of traveling across cells eachof which being formed by a different base station, and a peripheralapparatus which is provided separately from said cellular mobiletelephone apparatus and is capable of communicating bidirectionally withsaid cellular mobile telephone apparatus, wherein said cellular mobiletelephone comprises: a receiving/transmitting device for receiving andtransmitting radio frequency signals between a base station and saidcellular mobile telephone; a modulating/demodulating device fordemodulating the radio frequency signals into a digital signal includingan audio signal and a control signal and for modulating the digitalsignal into the radio frequency signals; a controlling device forcontrolling operation of said cellular mobile telephone apparatus inaccordance with the control signal; and; a first communicating devicefor performing bidirectional communication with said peripheralapparatus, said first communicating device transmitting a first controlinformation for controlling operation of said peripheral apparatus; andwherein said peripheral apparatus comprises: an inputting device forinputting a second control information; a second communication devicefor performing bidirectional communication with the cellular mobiletelephone; and a control device for controlling operation of saidperipheral apparatus in accordance with said first control information,said control device performing control of said cellular mobile telephoneapparatus through said second communication device according to saidsecond control information either for sending back a message notifyingthat the call cannot be received through said connectable base stationor for changing said cellular mobile telephone apparatus into arecording mode by inputting an instruction for controlling said cellularmobile telephone.
 2. A cellular mobile telephone system according toclaim 1, wherein said cellular mobile telephone apparatus furthercomprises a signal providing device for providing an identificationsignal including an identification information when a call is receivedat said cellular mobile telephone apparatus, said peripheral apparatusis adapted to receive said identification signal and said peripheralapparatus is operated according to said first control information whensaid identification signal coincides with one assigned to saidperipheral apparatus.
 3. A cellular mobile telephone apparatus capableof sending a message through a connectable base station even in a caseof traveling across cells each of which being formed by a different basestation comprising: a receiving/transmitting device for receiving andtransmitting radio frequency signals between a base station and saidcellular mobile telephone apparatus, a modulating/demodulating devicefor demodulating the radio frequency signals into a digital signalincluding an audio signal and a control signal and for modulating thedigital signal into the radio frequency signals; a controlling devicefor controlling operation of said cellular mobile telephone apparatus inaccordance with the control signal; and a first communicating device forenabling bidirectional communication with a peripheral apparatus whichis provided separately from said cellular mobile telephone apparatus andwhich is capable of communicating bidirectionally with said cellularmobile telephone apparatus, said first communicating device transmittinga first control information for controlling operation of said peripheralapparatus, and said first communicating device being capable ofreceiving a second control information from said peripheral apparatuseither for sending back a message notifying that the call cannot bereceived through said connectable base station or for changing saidcellular mobile telephone apparatus into recording mode by inputting aninstruction for controlling said cellular mobile telephone.
 4. Acellular mobile telephone apparatus according to claim 3, wherein saidcellular mobile telephone apparatus further comprises a signal providingdevice for providing an identification signal including anidentification information when a call is received at said cellularmobile telephone apparatus, so as to make said peripheral apparatusreceive said identification signal and so as to make said peripheralapparatus to be operated according to said first control informationwhen said identification signal coincides with one assigned to saidperipheral apparatus.
 5. A peripheral apparatus capable of communicatingbidirectionally with a cellular mobile telephone apparatus and providedseparately from said cellular mobile telephone apparatus and capable ofsending a message through a connectable base station even in a case oftraveling across cells each of which being formed by a different basestation, comprising: a second communication device for enablingbidirectional communication with said cellular mobile telephoneapparatus; an inputting device for inputting an instruction forcontrolling said cellular mobile telephone apparatus; and a controldevice for controlling operation of said peripheral apparatus inaccordance with a first control information to be transmitted from saidcellular mobile telephone apparatus, said control device enablingcontrol of said cellular mobile telephone apparatus through said secondcommunication device, according to said instruction either for sendingback a message notifying that the call cannot be received through saidconnectable base station or for changing said cellular mobile telephoneapparatus into recording mode by inputting an instruction forcontrolling said cellular mobile telephone.
 6. A peripheral apparatusaccording to claim 5, wherein said peripheral apparatus is capable ofreceiving an identification signal from said cellular mobile telephoneapparatus so as to make said peripheral apparatus to be operatedaccording to said first control information when said identificationsignal coincides with one assigned to said peripheral apparatus.
 7. Acellular mobile telephone system comprising a cellular mobile telephoneapparatus capable of transmitting and receiving a message between a basestation when said cellular mobile telephone apparatus is located withina service area of said base station, and a peripheral apparatus which isprovided separately from said cellular mobile telephone apparatus and iscapable of communicating bidirectionally with said cellular mobiletelephone apparatus, wherein said cellular mobile telephone comprises: areceiving/transmitting device for receiving and transmitting radiofrequency signals between said base station and said cellular mobiletelephone; a modulating/demodulating device for demodulating the radiofrequency signals into a digital signal including an audio signal and acontrol signal and for modulating the digital signal into the radiofrequency signals; a controlling device for controlling operation ofsaid cellular mobile telephone apparatus in accordance with the controlsignal; and a first communicating device for performing bidirectionalcommunication with said peripheral apparatus, said first communicatingdevice transmitting a first control information for controllingoperation of said peripheral apparatus; and wherein said peripheralapparatus comprises: an inputting device for inputting a second controlinformation; a second communication device for performing bidirectionalcommunication with the cellular mobile telephone; and a control devicefor controlling operation of said peripheral apparatus in accordancewith said first control information, said control device performingcontrol of said cellular mobile telephone apparatus through said secondcommunication device according to said second control information eitherfor sending back a message notifying that he/she cannot respond to thetermination or for changing said cellular mobile telephone apparatusinto a recording mode by inputting an instruction for controlling saidcellular mobile telephone.
 8. A cellular mobile telephone apparatuscapable of transmitting and receiving a message between a base stationwhen said cellular mobile telephone apparatus is located within aservice area of said base station, comprising: a receiving/transmittingdevice for receiving and transmitting radio frequency signals between abase station and said cellular mobile telephone apparatus; amodulating/demodulating device for demodulating the radio frequencysignals into a digital signal including an audio signal and a controlsignal and for modulating the digital signal into the radio frequencysignals; a controlling device for controlling operation of said cellularmobile telephone apparatus in accordance with the control signal; and afirst communicating device for enabling bidirectional communication witha peripheral apparatus which is provided separately from said cellularmobile telephone apparatus and which is capable of communicatingbidirectionally with said cellular mobile telephone apparatus, saidfirst communicating device transmitting a first control information forcontrolling operation of said peripheral apparatus, and said firstcommunicating device being capable of receiving a second controlinformation from said peripheral apparatus either for sending back amessage notifying that he/she cannot respond to the termination or forchanging said cellular mobile telephone apparatus into a recording modeby inputting an instruction for controlling said cellular mobiletelephone.
 9. A peripheral apparatus capable of communicatingbidirectionally with a cellular mobile telephone apparatus and providedseparately from said cellular mobile telephone apparatus capable oftransmitting and receiving a message between a base station when saidcellular mobile telephone apparatus is located within a service area ofsaid base station, comprising: a second communication device forenabling bidirectional communication with said cellular mobile telephoneapparatus; an inputting device for inputting an instruction forcontrolling said cellular mobile telephone apparatus; and a controldevice for controlling operation of said peripheral apparatus inaccordance with a first control information to be transmitted from saidcellular mobile telephone apparatus, said control device enablingcontrol of said cellular mobile telephone apparatus through said secondcommunication device according to said instruction either for sendingback a message notifying that he/she cannot respond to the terminationor for changing said cellular mobile telephone apparatus into arecording mode by inputting an instruction for controlling said cellularmobile telephone.